Effect of Water Stress on Photosynthesis in Two Mulberry Genotypes with Different drought Tolerance
作者： S. Ramanjulu , N. Sreenivasulu , C. Sudhakar
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摘要: Three-month-old mulberry (Morus alba L.) cultivars (drought tolerant S13 and drought sensitive S54) were subjected to water stress for 15 d. Water decreased the leaf potential, net photosynthetic rate (PN), stomatal conductance (gs) in both cultivars. However, magnitude of decline was comparatively greater cultivar (S54). Intercellular CO2 concentration (Ci) unaltered during mild stress, but significantly increased at severe The photosystem 2 activity declined only a Ci/gs ratio representing mesophyll efficiency S13. Involvement and/or non-stomatal components declining PN depended on severity duration stress. degree limitations relatively less cultivar.
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